Negotiable Instruments Act, 1881
Chapter 07 Of Discharge from Liability on Notes Bills and Cheques
Section 85A: Drafts drawn by one branch of a bank on another payable to order
Where any draft, that is, an order to pay money, drawn by one office of a bank upon another office of the same bank for a sum of money payable to order on demand, purports to be endorsed by or on behalf of the payee, the bank is discharged by payment in due course.